chordates are slowly developed from non chordartes..give reason.
Answers
Explanation:
These characteristics are only present during embryonic development in some chordates.
The notochord provides skeletal support, gives the phylum its name, and develops into the vertebral column in vertebrates.
The dorsal hollow nerve cord develops into the central nervous system: the brain and spine.
Pharyngeal slits are openings in the pharynx that develop into gill arches in bony fish and into the jaw and inner ear in terrestrial animals.
hope you understand it
Answer:
A chordate (/ˈkɔːrdeɪt/) is an animal of the phylum Chordata (/kɔːrˈdeɪtə/). During some period of their life cycle, chordates possess a notochord, a dorsal nerve cord, pharyngeal slits, and a post-anal tail: these four anatomical features define this phylum. Chordates are also bilaterally symmetric, and have a coelom, metameric segmentation, and circulatory system.